Y gwahaniaeth rhwng diwygiadau o "Defnyddiwr:Porius1"

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Lleihawyd o 17,752 beit ,  12 o flynyddoedd yn ôl
Wedi gwacáu'r dudalen yn llwyr
(Wedi gwacáu'r dudalen yn llwyr)
{{Babel|cy|en-5|id-3|es-2|nl-2|de-1|fr-1|br-1}}
 
 
== Nodiadau atgoffa ==
 
[[:en:WP:NPOV]]
 
I ail-gyfeirio tudalen : "#REDIRECT [[Enw'r erthygl]]"
 
[http://commons.wikimedia.org/wiki/Main_Page Commons]
 
[http://commons.wikimedia.org/wiki/Category:Aves Commons Category:Aves]
 
[http://meta.wikimedia.org/wiki/List_of_Wikipedias_by_sample_of_articles/Absent_Articles#de_Deutsch Erthyglau absennol]
 
[http://meta.wikimedia.org/wiki/List_of_Wikipedias_by_sample_of_articles/Absent_Articles#cy_Cymraeg Erthyglau angenrheidiol sydd ar goll yn Gymraeg]
 
[http://www.bbc.co.uk/cymru/canrif/1989.shtml Eisteddfod Genedlaethol]
 
Rhestr o '''amrywiadau ar enwau gwledydd yn Gymraeg'''.
 
{| class="wikitable sortable"
|- bgcolor="#ececec"
| '''Yr Atlas Cymraeg Newydd'''<ref>Jones, Gareth (1999) ''[[Yr Atlas Cymraeg Newydd]]'', Uned Iaith Genedlaethol Cymru, Caerdydd.</ref> || '''Bwrdd yr Iaith Gymraeg'''<ref>[[Bwrdd yr Iaith Gymraeg]] (2007) ''[http://www.e-gymraeg.org/bwrdd-yr-iaith/termau/default.aspx?lang=cy Gwledydd a Dinasoedd y Byd]''</ref> || '''Geiriadur yr Academi'''<ref>Griffith, Bruce a Jones, Dafydd Glyn (2003) ''[[Geiriadur yr Academi]]'', 5ed arg., Gwasg Prifysgol Cymru, Caerdydd.</ref> || '''Ffurf bresennol ar y Wicipedia''' || Yn dilyn
|-
| [[Afghanistan]] || [[Afghanistan]] || [[Affganistan]] || [[Afghanistan]] || A,B
|-
| [[Angola]] || [[Angola]] || [[Angola]] || '''[[Angola]]''' || -
|-
| [[Yr Aifft|Aifft, Yr]] || [[Yr Aifft|Aifft, Yr]] || [[Yr Aifft|Aifft, Yr]] || '''[[Yr Aifft|Aifft, Yr]]''' || -
|-
| [[Albania]] || [[Albania]] || [[Albania]] || '''[[Albania]]''' || -
|-
| [[Algeria]] || [[Algeria]] || [[Algeria]] || '''[[Algeria]]''' || -
|-
| [[Yr Almaen|Almaen, Yr]] || [[Yr Almaen|Almaen, Yr]] || [[Yr Almaen|Almaen, Yr]] || '''[[Yr Almaen|Almaen, Yr]]''' || -
|-
| [[Andorra]] || - || [[Andorra]] || '''[[Andorra]]''' || -
|-
| [[Antigua a Barbuda]] || - || - || '''[[Antigua a Barbuda]]''' || -
|-
| [[Ariannin]] || [[Yr Ariannin|Ariannin, (Yr)]] || [[Yr Ariannin|Ariannin, (Yr)]] || [[Yr Ariannin|Ariannin, (Yr)]] || B,G
|-
| [[Armenia]] || [[Armenia]] || [[Armenia]] || '''[[Armenia]]''' || -
|-
| [[Ynys Aruba]] || - || - || [[Aruba]] || X
|-
| [[Awstralia]] || [[Awstralia]] || [[Awstralia]] || '''[[Awstralia]]''' || -
|-
| [[Awstria]] || [[Awstria]] || [[Awstria]] || '''[[Awstria]]''' || -
|-
| [[Azerbaijan]] || [[Azerbaijan]] || - || '''[[Azerbaijan]]''' || -
|-
| [[Bangladesh]] || [[Bangladesh]] || - || '''[[Bangladesh]]''' || -
|-
| [[Bahamas]] || - || [[Ynysoedd Bahama]]<br>[[Y Bahamas]] || [[Y Bahamas]] || G
|-
| [[Bahrain]] || - || - || '''[[Bahrain]]''' || -
|-
| [[Barbados]] || - || [[Barbados]] || '''[[Barbados]]''' || -
|-
| [[Belarus]] || [[Belarws]] || [[Belorwsia]] || [[Belarws]] || B
|-
| [[Belize]] || [[Belize]] || - || '''[[Belize]]''' || -
|-
| [[Benin]] || [[Benin]] || - || [[Benin]]
|-
| [[Ynys Bermuda]] || - || - || [[Bermuda]]
|-
| [[Bhutan]] || [[Bhutan]] || [[Bhwtan]] || [[Bhutan]] || A,B
|-
| [[Bolivia]] || [[Bolifia]] || [[Bolifia]] || [[Bolifia]] || B.G
|-
| [[Bosna-Hercegovina]] || [[Bosnia-Herzegovina]] || [[Bosnia]] || [[Bosnia a Hercegovina]]
|-
| [[Botswana]] || [[Botswana]] || - || '''[[Botswana]]''' || -
|-
| [[Brasil]] || [[Brasil]] || [[Brasil]] || '''[[Brasil]]''' || -
|-
| [[Brunei]] || [[Brunei]] || - || '''[[Brunei]]''' || -
|-
| [[Burkina]] || [[Burkina Faso]] || - || [[Burkina Faso]] || B,G
|-
| [[Burundi]] || [[Burundi]] || [[Bwrwndi]] || [[Bwrwndi]] || G
|-
| [[Bwlgaria]] || [[Bwlgaria]] || [[Bwlgaria]] || '''[[Bwlgaria]]''' || -
|-
| [[Cabo Verde]] || - || - || '''[[Cabo Verde]]''' || -
|-
| [[Cambodia]] || [[Cambodia]] || [[Cambodia]] || '''[[Cambodia]]''' || -
|-
| [[Cameroun]]<br>[[Cameroon]] || [[Cameroon]] || [[Y Camerŵn|Camerŵn, Y]] || [[Camerŵn]] || X
|-
| [[Canada]] || [[Canada]] || [[Canada]] || '''[[Canada]]''' || -
|-
| [[Colombia]] || [[Colombia]] || [[Colombia]] || '''[[Colombia]]''' || -
|-
| [[Comoros]] || - || - || '''[[Comoros]]''' || -
|-
| [[Gweriniaeth y Congo|Congo]] || - || - || [[Gweriniaeth y Congo]] || X
|-
| [[Gweriniaeth Ddemocrataidd y Congo]] || - || - || [[Gweriniaeth Ddemocrataidd Congo]] || X
|-
| [[Costa Rica]] || [[Costa Rica]] || - || '''[[Costa Rica]]''' || X
|-
| [[Côte d'Ivoire]] || [[Y Traeth Ifori|Traeth Ifori, Y]] || [[Y Traeth Ifori|Traeth Ifori, Y]] || [[Côte d'Ivoire]] || A
|-
| [[Croatia]] || [[Croatia]] || [[Croatia]] || '''[[Croatia]]''' || -
|-
| [[Cuba]] || [[Ciwba]] || [[Ciwba]]<br>[[Cuba]] || [[Cuba]] || A,G
|-
| [[Cyprus]] || - || [[Cyprus]] || '''[[Cyprus]]''' || -
|-
| [[Chile]] || [[Chile]] || [[Chile]]<br>[[Tsili]] || [[Chile]]
|-
| [[Gweriniaeth Pobl Tsieina|China]] || [[Gweriniaeth Pobl Tsieina|China]] || [[Gweriniaeth Pobl Tsieina|Tsieina]] || [[Gweriniaeth Pobl Tsieina]]
|-
| [[De Korea]] || [[Gweriniaeth Korea]] || [[De Corea]] || [[De Corea]] || G
|-
| [[Y Deyrnas Unedig|Deyrnas Unedig, Y]] || [[Y Deyrnas Unedig|Deyrnas Unedig, Y]] || [[Y Deyrnas Unedig|Deyrnas Unedig, Y]]<br>[[Y Deyrnas Unedig|Deyrnas Gyfun, Y]] || '''[[Y Deyrnas Unedig|Deyrnas Unedig, Y]]''' || -
|-
| [[Denmarc]] || [[Denmarc]] || [[Denmarc]] || '''[[Denmarc]]''' || -
|-
| [[Djibouti]] || [[Djibouti]] || - || '''[[Djibouti]]''' || -
|-
| [[Dominica]] || - || [[Dominica]] || '''[[Dominica]]''' || -
|-
| [[Dwyrain Timor]] || - || - || '''[[Dwyrain Timor]]''' || -
|-
| [[Ecuador]] || [[Ecuador]] || [[Ecwador]] || [[Ecuador]] || A,B
|-
| [[Yr Eidal|Eidal, Yr]] || [[Yr Eidal|Eidal, Yr]] || [[Yr Eidal|Eidal, Yr]] || '''[[Yr Eidal|Eidal, Yr]]''' || -
|-
| [[El Salvador]] || [[El Salvador]] || - || '''[[El Salvador]]''' || -
|-
| [[Emiradau Arabaidd Unedig]] || [[Emiradau Arabaidd Unedig]] || - || [[Yr Emiradau Arabaidd Unedig]] || X
|-
| [[Eritrea]] || [[Eritrea]] || - || '''[[Eritrea]]''' || -
|-
| [[Estonia]] || [[Estonia]] || [[Estonia]] || '''[[Estonia]]''' || -
|-
| [[Ethiopia]] || [[Ethiopia]] || [[Ethiopia]] || '''[[Ethiopia]]''' || -
|-
| - || - || [[Y Fatican|Fatican, Y]]<br>[[Dinas y Fatican]] || '''[[Y Fatican|Fatican, Y]]''' || -
|-
| [[Fiji]] || [[Ffiji]] || [[Ffiji]] || '''[[Fiji]]''' || -
|-
| [[Føroyar]] || - || - || '''[[Føroyar]]''' || -
|-
| [[Ffederasiwn Rwsia]] || [[Ffederasiwn Rwsia]]<br>[[Rwsia]] || [[Rwsia]] || [[Ffederasiwn Rwsia]]
|-
| [[Y Ffindir|Ffindir, Y]] || [[Y Ffindir|Ffindir, Y]] || [[Y Ffindir|Ffindir, Y]] || '''[[Y Ffindir|Ffindir, Y]]''' || -
|-
| [[Ffrainc]] || [[Ffrainc]] || [[Ffrainc]] || '''[[Ffrainc]]''' || -
|-
| [[Gabon]] || [[Gabon]] || [[Gabon]] || '''[[Gabon]]''' || -
|-
| [[Gambia]] || [[Gambia]] || [[Gambia]] || [[Y Gambia]] || X
|-
| [[Georgia]] || [[Georgia]] || [[Georgia]] || '''[[Georgia]]''' || -
|-
| [[Ghana]] || [[Ghana]] || [[Ghana]] || '''[[Ghana]]''' || -
|-
| [[Grenada]] || - || - || '''[[Grenada]]''' || -
|-
| [[Gogledd Korea]] || [[Gogledd Korea]] || - || [[Gogledd Corea]] || X
|-
| [[Gwlad Groeg|Groeg]] || [[Gwlad Groeg]] || [[Gwlad Groeg|Groeg]]<br>[[Gwlad Groeg]] || '''[[Gwlad Groeg]]''' || -
|-
| [[Guatemala]] || [[Guatemala]] || - || '''[[Guatemala]]''' || -
|-
| [[Guinea Gyhydeddol]] || [[Guinea Gyhydeddol]] || - || '''[[Guinea Gyhydeddol]]''' || -
|-
| [[Guiné-Bissau]] || [[Guinea-Bissau]] || - || '''[[Guiné-Bissau]]''' || -
|-
| [[Guinée]] || [[Guinea]] || [[Guinée|Gini]] || [[Guinée]] || A
|-
| [[Guyana]] || [[Guyana]] || [[Gaiana]] || [[Guyana]] || A,B
|-
| [[Guyane Ffrengig]] || - || - || [[Guyane]] || X
|-
| [[Ynys Guadeloupe]] || - || - || [[Guadeloupe]] || X
|-
| [[Ynys Guam]] || - || - || Dim erthygl || -
|-
| [[Gweriniaeth Canolbarth Affrica]] || [[Gweriniaeth Canolbarth Affrica]] || - || '''[[Gweriniaeth Canolbarth Affrica]]''' || -
|-
| [[Gweriniaeth De Affrica]] || [[Gweriniaeth De Affrica]] || [[De Affrica]]<br>[[Deheudir Affrica]]<br>[[De'r Affrig]] || [[De Affrica]] || G
|-
| [[Gweriniaeth Dominica]] || [[Gweriniaeth Dominica]] || [[Y Weriniaeth Ddominicaidd|Weriniaeth Ddominicaidd, Y]] || [[Gweriniaeth Dominica]] || A,B
|-
| [[Gweriniaeth Ddemocrataidd Congo]] || [[Gweriniaeth Ddemocrataidd y Congo]] || - || [[Gweriniaeth Ddemocrataidd Congo]] || A
|-
| [[Gweriniaeth Iwerddon]] || [[Gweriniaeth Iwerddon]] || [[Gweriniaeth Iwerddon|Iwerddon]] || '''[[Gweriniaeth Iwerddon]]''' || -
|-
| [[Gweriniaeth Tsiec]] || [[Y Weriniaeth Tsiec|Weriniaeth Tsiec, Y]] || [[Y Weriniaeth Tsiecaidd|Weriniaeth Tsiecaidd, Y]] || [[Gweriniaeth Tsiec]] || A
|-
| [[Gwlad Belg]] || [[Gwlad Belg]] || [[Belg]]<br>[[Gwlad Belg]] || '''[[Gwlad Belg]]''' || -
|-
| [[Gwlad Iorddonen]] || [[Gwlad yr Iorddonen]] || [[Gwlad Iorddonen|Iorddonen]]<br>[[Gwlad Iorddonen]] || [[Gwlad Iorddonen]] || A, G
|-
| [[Gwlad Pwyl]] || [[Gwlad Pwyl]] || [[Pwyl]]<br>[[Gwlad Pwyl]]<br>[[Pwyldir]] || '''[[Gwlad Pwyl]]''' || -
|-
| [[Gwlad Swazi]] || [[Swaziland]] || - || [[Gwlad Swazi]] || A
|-
| [[Gwlad Thai]] || [[Gwlad Thai]] || [[Gwlad y Tai]]<br>[[Gwlad y Thai]]<br>[[Tai-dir]] || [[Gwlad Thai]] || A,B
|-
| [[Gwlad yr Iâ]] || [[Gwlad yr Iâ]] || [[Ynys yr Iâ]]<br>[[Gwlad yr Iâ]] || '''[[Gwlad yr Iâ]]''' || -
|-
| [[Haiti]] || [[Haiti]] || [[Haiti]] || '''[[Haiti]]''' || -
|-
| [[Honduras]] || [[Honduras]] || [[Hondwras]] || [[Honduras]] || A,B
|-
| [[Hong Kong]] || - || - || '''[[Hong Kong]]''' || -
|-
| [[Hwngari]] || [[Hwngari]] || [[Hwngari]]<br>[[Hwngaria]] || '''[[Hwngari]]''' || -
|-
| [[India]] || [[India]] || [[India|India, (Yr)]] || [[India]] || A,B
|-
| [[Indonesia]] || [[Indonesia]] || [[Indonesia]] || '''[[Indonesia]]''' || -
|-
| [[Iran]] || [[Iran]] || [[Iran]] || '''[[Iran]]''' || -
|-
| [[Iraq]] || [[Irac]] || [[Irac]] || [[Irac]] || B,G
|-
| [[Yr Iseldiroedd|Iseldiroedd, Yr]] || [[Yr Iseldiroedd|Iseldiroedd, Yr]] || [[Yr Iseldiroedd|Iseldiroedd, Yr]] || '''[[Yr Iseldiroedd|Iseldiroedd, Yr]]''' || -
|-
| [[Israel]] || [[Israel]] || [[Israel]] || '''[[Israel]]''' || -
|-
| [[Jamaica]] || [[Jamaica]] || [[Jamaica]] || '''[[Jamaica]]''' || -
|-
| [[Japan]] || [[Japan]] || [[Japan]]<br>[[Siapan]] || '''[[Japan]]''' || -
|-
| [[Kazakstan]] || [[Kazakhstan]] || - || [[Kazakstan]] || A
|-
| [[Kenya]] || [[Kenya]] || [[Cenia]] || [[Kenya]] || A,B
|-
| [[Kiribati]] || - || - || '''[[Kiribati]]''' || -
|-
| [[Kuwait]] || [[Kuwait]] || [[Coweit]] || [[Kuwait]] || A,B
|-
| [[Kyrgyzstan]] || [[Kyrgyzstan]] || [[Cirgisia]] || [[Kyrgyzstan]] || A,B
|-
| [[Laos]] || [[Laos]] || [[Laos]] || '''[[Laos]]''' || -
|-
| [[Latvia]] || [[Latfia]] || [[Latfia]] || [[Latfia]] || B,G
|-
| [[Lesotho]] || [[Lesotho]] || - || '''[[Lesotho]]''' || -
|-
| [[Libanus]] || [[Libanus]] || [[Libanus]] || '''[[Libanus]]''' || -
|-
| [[Liberia]] || [[Liberia]] || [[Liberia]] || '''[[Liberia]]''' || -
|-
| [[Libya]] || [[Libya]] || [[Libia]] || [[Libya]] || A,B
|-
| [[Liechtenstein]] || - || - || '''[[Liechtenstein]]''' || -
|-
| [[Lithuania]] || [[Lithwania]] || [[Lithwania]] || [[Lithwania]] || B,G
|-
| [[Luxembourg]] || [[Lwcsembwrg]] || [[Lwcsembwrg]] || [[Lwcsembwrg]] || B,G
|-
| [[Macau]] || - || - || '''[[Macau]]''' || -
|-
| [[Gweriniaeth Macedonia|Macedonia]] || [[Gweriniaeth Macedonia|Macedonia]] || [[Gweriniaeth Macedonia|Macedonia]] || [[Gweriniaeth Macedonia]] || X
|-
| [[Madagascar]] || [[Madagasgar]] || [[Madagasgar]] || [[Madagascar]] || A
|-
| [[Malaŵi]] || [[Malawi]] || - || [[Malawi]] || B
|-
| [[Malaysia]] || [[Malaysia]] || [[Maleisia]] || [[Malaysia]] || A,B
|-
| [[Maldives]] || - || - || '''[[Maldives]]''' || -
|-
| [[Mali]] || [[Mali]] || [[Mali]] || '''[[Mali]]''' || -
|-
| [[Malta]] || - || [[Malta]]<br>[[Melita]] || '''[[Malta]]''' || -
|-
| [[Mauritania]] || [[Mauritania]] || [[Mawritania]] || [[Mauritania]] || A,B
|-
| [[Mauritius]] || - || [[Mawrisiws]] || [[Mauritius]] || A
|-
| [[México]] || [[Mecsico]] || [[Mecsico]]<br>[[Mexico]] || [[Mexico]] || G
|-
| [[Micronesia]] || - || - || '''[[Micronesia]]''' || -
|-
| [[Moçambique]] || [[Mozambique]] || - || [[Mosambic]] || X
|-
| [[Mongolia]] || - || [[Mongolia]] || '''[[Mongolia]]''' || -
|-
| [[Moldova]] || [[Moldofa]] || - || [[Moldofa]] || B
|-
| [[Monaco]] || - || - || '''[[Monaco]]''' || -
|-
| - || - || [[Montenegro]] || '''[[Montenegro]]''' || -
|-
| [[Moroco]] || [[Morocco]] || [[Moroco]] || [[Moroco]] || A,G
|-
| [[Myanmar]] || [[Burma]] || [[Byrma]]<br>[[Bwrma]] || [[Myanmar]] || A
|-
| [[Namibia]] || [[Namibia]] || [[Namibia]] || '''[[Namibia]]''' || -
|-
| [[Nauru]] || - || [[Nawrw]] || -
|-
| [[Nepal]] || [[Nepal]] || [[Nepal]] || '''[[Nepal]]''' || -
|-
| [[Nicaragua]] || [[Nicaragua]] || [[Nicaragwa]] || [[Nicaragua]] || A,B
|-
| [[Niger]] || [[Niger]] || [[Niger]] || '''[[Niger]]''' || -
|-
| [[Nigeria]] || [[Nigeria]] || [[Nigeria]] || '''[[Nigeria]]''' || -
|-
| [[Niue]] || - || - || '''[[Niue]]''' || -
|-
| [[Norwy]] || [[Norwy]] || [[Norwy]] || '''[[Norwy]]''' || -
|-
| [[Oman]] || [[Oman]] || [[Oman]] || '''[[Oman]]''' || -
|-
| [[Pakistan]] || [[Pacistan]] || [[Pacistan]] || [[Pakistan]] || A
|-
| [[Palau]] || - || - || '''[[Palau]]''' || -
|-
| [[Panamá]] || [[Panama]] || [[Panama]]<br>[[Panamâ]] || [[Panama]] || B,G
|-
| [[Papua Guinea Newydd]] || [[Papua Guinea Newydd]] || - || '''[[Papua Guinea Newydd]]''' || -
|-
| [[Paraguay]] || [[Paraguay]] || [[Paraguay]]<br>[[Paragwâi]] || '''[[Paraguay]]''' || -
|-
| [[Periw]] || [[Periw]] || [[Periw]] || '''[[Periw]]''' || -
|-
| [[Pilipinas]] || [[Ynysoedd y Philippines]] || [[Ynysoedd y Philipinos]]<br>[[Ynysoedd y Philipinau]] || [[Pilipinas]] || A
|-
| [[Portiwgal]] || [[Portiwgal]] || [[Portiwgal]] || '''[[Portiwgal]]''' || -
|-
| [[Puerto Rico]] || - || - || '''[[Puerto Rico]]''' || -
|-
| [[Qatar]] || [[Qatar]] || - || '''[[Qatar]]''' || -
|-
| [[Rwanda]] || [[Rwanda]] || [[Rwanda]] || '''[[Rwanda]]''' || -
|-
| [[România ]] || [[Rwmania]] || [[Rwmania]] || [[Rwmania]] || B,G
|-
| [[St Kitts-Nevis]] || - || - || [[Saint Kitts a Nevis]] || X
|-
| [[St Lucia]] || - || - || [[Saint Lucia]] || X
|-
| [[St Vincent a'r Grenadines]] || - || - || [[Saint Vincent a'r Grenadines]] || X
|-
| [[Samoa]] || - || [[Samoa]] || '''[[Samoa]]''' || -
|-
| [[San Marino]] || - || [[San Marino]] || '''[[San Marino]]''' || -
|-
| [[São Tomé a Príncipe]] || - || - || '''[[São Tomé a Príncipe]]''' || -
|-
| [[Saudi Arabia]] || [[Saudi Arabia]] || [[Sawdi-Arabia]] || [[Saudi Arabia]] || A,B
|-
| [[Sbaen]] || [[Sbaen]] || [[Sbaen]]<br>[[Ysbaen]] || '''[[Sbaen]]''' || -
|-
| [[Seland Newydd]] || [[Seland Newydd]] || [[Seland Newydd]] || '''[[Seland Newydd]]''' || -
|-
| [[Sénégal]] || [[Senegal]] || [[Senegal]] || [[Sénégal]] || A
|-
| - || - || [[Serbia]] || '''[[Serbia]]''' || -
|-
| [[Seychelles]] || - || - || -
|-
| [[Sierra Leone]] || [[Sierra Leone]] || - || '''[[Sierra Leone]]''' || -
|-
| [[Singapore]] || - || [[Singapôr]] || [[Singapore]] || A
|-
| [[Slofacia]] || [[Slofacia]] || [[Slofacia]] || '''[[Slofacia]]''' || -
|-
| [[Slovenija]] || [[Slofenia]] || [[Slofenia]] || [[Slofenia]] || B,G
|-
| [[Somalia]] || [[Somalia]] || [[Somalia]] || '''[[Somalia]]''' || -
|-
| [[Sri Lanka]] || [[Sri Lanka]] || [[Sri Lanca]] || [[Sri Lanka]] || A,B
|-
| [[Sudan]] || [[Sudan]] || [[Y Swdan|Swdan, Y]] || [[Sudan]] || A,B
|-
| [[Suriname]] || [[Surinam]] || [[Swrinam]] || [[Suriname]] ||A
|-
| [[Sweden]] || [[Sweden]] || [[Sweden]] || '''[[Sweden]]''' || -
|-
| [[Y Swistir|Swistir, Y]] || [[Y Swistir|Swistir, Y]] || [[Y Swistir|Swistir, Y]] || '''[[Y Swistir|Swistir, Y]]''' || -
|-
| [[Syria]] || [[Syria]] || [[Syria]] || '''[[Syria]]''' || -
|-
| [[Gweriniaeth Tsieina|Taiwan]] || [[Gweriniaeth Tsieina|Taiwan]] || - || -
|-
| [[Tajikistan]] || [[Tajikistan]] || [[Tajicistan]] || -
|-
| [[Taleithiau Ffederal Micronesia]] || - || - || '''[[Taleithiau Ffederal Micronesia]]''' || -
|-
| [[Tanzania]] || [[Tanzania]] || [[Tansanïa]] || [[Tanzania]] || A,B
|-
| [[Tchad]] || [[Chad]] || [[Tsiad]] || [[Tchad]] || A
|-
| [[Tokelau|Ynysoedd Tokelau]] || - || - || [[Tokelau]] || X
|-
|-| [[Tonga]] || - || [[Tonga]] || '''[[Tonga]]''' || -
|-
|-| [[Tonga]] || - || [[Tonga]] || '''[[Tonga]]''' || -
|-
| [[Trinidad a Tobago]] || - || [[Trinidad a Thobago]] || [[Trinidad a Tobago]] || A
|-
| [[Tunisia]] || [[Tunisia]] || [[Tiwnisia]] || [[Tunisia]] || A,B
|-
| [[Tuvalu]] || - || [[Twfalw]] || -
|-
| [[Twrci]] || [[Twrci]] || [[Twrci]] || '''[[Twrci]]''' || -
|-
| [[Turkmenistan]] || [[Turkmenistan]] || [[Tyrcmenistan]] || [[Turkmenistan]] || A,B
|-
| [[Uganda]] || [[Uganda]] || [[Wganda]]<br>[[Uganda]] || '''[[Uganda]]''' || -
|-
| [[Unol Daleithiau America]] || [[Unol Daleithiau America]] || [[Unol Daleithiau America]]<br>[[Yr Unol Daleithiau|Unol Daleithiau, Yr]]<br>[[Y Taleithiau Unedig|Taleithiau Unedig, Y]] || '''[[Unol Daleithiau America]]''' || -
|-
| [[Uruguay]] || [[Uruguay]] || [[Wrwgwái]]<br>[[Uruguay]] || [[Uruguay]] || A,B
|-
| [[Uzbekistan]] || [[Uzbekistan]] || [[Wsbecistan]] || [[Uzbekistan]]
|-
| [[Vanuatu]] || [[Vanuatu]] || - || '''[[Vanuatu]]''' || -
|-
| [[Venezuela]] || [[Venezuela]] || [[Feneswela]]<br>[[Venezuela]] || [[Venezuela]] || A,B
|-
| [[Viet Nam]] || [[Fietnam]] || [[Fiet-nam]] || [[Fiet Nam]] || X
|-
| [[Ukrain]] || [[Wcráin| Wcrain, (Yr)]] || [[Wcráin| Wcráin, (Yr)]] || [[Wcráin]] || X
|-
| [[Yemen]] || [[Yemen]] || - || '''[[Yemen]]''' || =
|-
| - || - || - || [[Ynysoedd Cayman]] || -
|-
| [[Ynysoedd Marshall]] || - || - || '''[[Ynysoedd Marshall]]''' || -
|-
| [[Ynysoedd Solomon]] || - || - || '''[[Ynysoedd Solomon]]''' || -
|-
| [[Zambia]] || [[Zambia]] || [[Sambia]] || [[Zambia]] || A,B
|-
| [[Zimbabwe]] || [[Zimbabwe]] || [[Simbabwe]] || [[Zimbabwe]] || A,B
|}
 
Lle mae'r ffurfiau yn wahanol, mae ffurf yr enw ar Wicipwdia yn dilyn:
* A : Atlas Cymraeg Newydd
* B : Bwrdd yr Iaith
* G : Geiriadur yr Academi
* X : Yn wahanol i bob un o'r uchod
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